[Sherlock sighs, a muted and irritated sound. Yet again John focuses on the trivial and misses the vital, it makes him wonder how anyone who isn't him ever manage to solve anything.]

No, the alcohol on his cuffs was wine, the alcohol on his breath was whiskey. There was a party before you found the body, multiple guests invited to celebrate the closing of a particularly difficult case.

[A pause.]

What else do the current clues tell you?